baber/WOPTO huggingface dataset:
Patent GB-681919-A (GB)
Title: Improvements in or relating to electric carrier current communication systems
Inventor: HARGREAVES THOMAS FREDERICK ST
IPC: H04J1/18
Filed: 1950-02-10
Abstract: 681,919. Carrier transmission. STANDARD TELEPHONES & CABLES, Ltd. Feb. 9, 1951 [Feb. 10, 1950], No. 3471/50. Class 40 (iv). In a carrier current communication system in which channel signalling is at a frequency just outside each channel, the channel low-pass filter 4 has a sharp cut-off at the end of the band nearest the signalling frequency, whilst the side-band selecting filter 8 has a sharp cut-off only at the other end of the pass-band. Speech currents at 1, Fig. 1, are amplitude limited at 3 to prevent the generation of harmonics during modulation before passing to modulator 6 by way of the low-pass filter 4 and hybrid coil 5. Signalling currents from source 10 which are keyed by a relay 11 are also applied via a bandpass filter or tuned circuit 12 to hybrid coil 5 for modulation in 6. Both speech and signalling currents pass to line via a band-pass filter 8, the cut-off of which is gradual at the signalling frequency end so as not to attenuate the signalling side-band, and are received by an identical but inverse circuit arrangement in which the transmitting processes are reversed. The characteristics of the receive filters 15 and 19 are similar to those of filters 8 and 4 respectively in the transmitter.
Patent GB-965865-A (GB)
Title: Improvements in or relating to wet strength additives for fibrous felted cellulosic materials
IPC: C08B37/14
Filed: 1963-01-28
Abstract: A composition for improving the wet strength of felted fibrous cellulosic materials comprises a mixture of (A) an oxidized starch or agalactomannan gum of which only the galactose units have been oxidized, and (B) an amino compound with amine number 50-700 being (i) an amino-imide or amino-imidazoline of a fat acid, or (ii) an aminoamide or amino-imidazoline of an epoxidized or polymeric fat acid.  The composition preferably contains 15-85% (A) and 85-15%, (B).  By "fat acid" is meant a monobasic aliphatic acid containing 8-24 carbon atoms, many examples of which are given, e.g. oleic and linoleic acids.  The substances (B) result from the reaction of fat acids or their epoxidized or polymeric derivatives with alkylene polyamines H2N(RNH)nH where R is an alkylene radical and n is an integer from 2 to 6.  One equivalent of fat acid or derivative reacts with 1 mole polyamine, e.g. at up to 300 DEG C. for up to several hours.  Dehydration proceeds first to the amide and then to the imidazoline ring.  The resultant compound has at least one free amine group; preferably n is more than 2, when a free primary amine group as well as one or more secondary amine groups is present per molecule polyamine.  If epoxidized fat acids or their esters are used, complex amines containing imino-linked polyamide-polyimidazolines result. For (A), a polysaccharide may be oxidized with periodate so that some or all anhydro hexose units are oxidized to dialdehyde; for starch, off the units may be oxidized, but for polygalactomannan gums, e.g. guar or locust bean gum, only the anhydrogalactose units should be oxidized.  The composition may be applied to woodstocks, or fibres derived from rag, cotton, bast, flax, straw or repulped broke.  The felted article may be tub-treated with aqueous solutions or dispersions of the composition, or sprayed with an aqueous and/or alcoholic solution or dispersion of the composition, and such solution or dispersion may be added to pulped cellulose fibre.  The alcohol may be isopropanol.  Examples describe the manufacture of paper from pulp to which the composition is added.
Patent GB-268091-A (GB)
Title: Method of manufacturing insulated handles
IPC: A47J45/08
Filed: 1926-02-08
Abstract: 268,091. Hollmann, A. Feb. 8, 1926. Handles.-Heat-insulating handles for boiling vessels and the like comprise a core consisting of a metal rod or wire suitably bent or curved and having disc of asbestos or other heat-insulating material threaded thereon, the handle being finished by grinding or polishing the discs and impregnating them with a suitable water-repulsing substance or composition. Fig. 1 shows two methods of securing the handle in placer the upper part of the figure showing a socket member C formed with a cavity for the reception of a nut b, washer c and a few discs A; the socket is screwed on the free end of the core B and is then riveted to the vessel. In the lower half of the figure the attachment member serves both as a nut for compressing the discs on the core and as a securing means. Figs. 2 and 3 show other handles composed of discs threaded on a core B, the handle end being suitably held in the attachment members C. Reference has been directed by the Comptroller to Specifications 5219/94; and 239,2'62, [Class 61 (i), Hand-tool &c. handles].
Patent GB-1375678-A (GB)
IPC: B65D17/347
Filed: 1973-01-24
Abstract: 1375678 Easy-open container ends NATIONAL CAN CORP 24 Jan 1973 [27 Jan 1972 (2)] 3585/73 Heading B8D A can end panel 14 comprises a weakening line 20 defining a generally key-hole shaped tear strip having an enlarged leading portion 28 and a relatively reduced-in-width trailing portion 30, and a pull tab 40 riveted to the enlarged portion and having a reduced width, e.g. recesses 56, intermediate the piercing and handle ends 52 and 50 of the tab engageable with the edges of the formed panel opening to maintain the tear strip and a portion of the tab on the inner side of the panel after severing of the weakening line. The tab is formed from sheet metal with a central dishing 62 and curled or rolled-under reinforced edges along its sides and hand portion, Figs. 9-11 (not shown). The piercing end is formed by a cut-away depending flange 72 and provided with a V-shaped deformation. The distance Y between the rivet 42 and the recesses is less than the distance X between the rivet and the tear strip end so that on subsequent depression of the tab through the enlarged opening formed on raising the tab, the tear strip is elastically stretched, and thus acts to draw the tab towards its final position, Fig. 6 (not shown). In a modification, Fig. 13 (not shown), the piercing tab end and enlarged leading tear strip portion are V- shaped. In another embodiment, Figs. 14-21 (not shown), the tab has a handle ring at one end and deflectable fingers 240 which project laterally and can be resiliently forced past the edges of the enlarged portion of the tear stripdefined opening on raising the tab. The tear strip is provided with transverse ribs 270, 272, which permit the strip to be folded to a concertina configuration. In a modification, Fig. 22 (not shown), the tab is dimensioned to lie within the confines of the container rim 216.
Patent GB-672354-A (GB)
Title: Improvements in carrying out powder-metallurgical processes
IPC: B22F9/22
Filed: 1950-02-13
Abstract: In powder metallurgical processes the metal powders are obtained by precipitating hydroxides or basic salts from solutions of the metals by ammonia or ammonium carbonate and reducing them at elevated temperatures, preferably with hydrogen and, if desired, under pressure.  The hydroxides may be precipitated with an excess of ammonia, which, after the removal of any solid impurities, is removed, e.g. by boiling.  The metals may be dissolved in ammoniacal ammonium carbonate with the use of an oxidizing agent.  Any metal remaining in solution after precipitation of the hydroxide may be precipitated with oxalic acid and the oxalate reduced in hydrogen. Alloys may be produced from solutions containing two or more metals. Examples are given of the production of copper, copper-iron alloy, and cobalt powders.  The powders obtained are stated to be easily sintered at low temperatures and to produce solid bodies without cracks. Specification 203,383, [Class 82(i)], is referred to.
Patent GB-1077056-A (GB)
Title: Improvements in or relating to combine harvesters
IPC: A01D41/14
Filed: 1965-02-26
Abstract: The subject-matter of this Specification is the same as that of Specification 1,077,055 by the claims relate to the foldable crop-dividers.
Patent GB-390293-A (GB)
Title: An improved hot towel rail or stand
IPC: A47K10/06
Filed: 1932-02-08
Abstract: 390,293. Towel rails or holders. BUSH, H. L. and JAMES, C. D., (trading as BUSH & CO., H. L.), 2, Wells Road, Bath. Feb. 8, 1932, No. 3641. [Class 52 (v).] A towel or like holder having a large surface which can be heated for drying an article hung over it comprises two side members 1, 2, preferably forming part of a single piece of sheet metal, these members being inclined to each other in inverted V-shape, and joined across the narrow top space between them by a towelsupporting surface no wider than this narrow space, so that the towel hangs closely against the sides. A pair of plates 7, 8 connected by rods 9, and a bottom plate 6, may close the remaining space between the side members. An electric heater 5 is mounted on the plate 6. 'The whole device may be mounted on a wall by means of hinge brackets attached to the plate 8, and secured in place by a detachable fastening 11 engaging the plate 7.
Patent GB-261225-A (GB)
Title: Improvements in and relating to presses for drawing sheet metal and the like
IPC: B21D24/08
Filed: 1926-02-09
Abstract: 261,225. Fitzpatrick, H. D., (Marquette Tool & Manufacturing Co.) Feb. 9, 1926. Cupping; embossing. - A press for embossing and drawing sheet metal &c. has co-operating dies 10, 14 the lower of which is supported by a number of cushioning devices, in such a manner that at a given point in the stroke, the drawing resistance is transferred from one group of cushioning devices to another group. The plate 19 carrying pins 20 supporting the lower dies is slidablv mounted on a piston-rod 17 controlled by fluid pressure in a cylinder 16. Cylinders 21 pivotally-mounted on the cylinder 16 are provided with piston-rods 27 linked at 35 to bell-cranks 34, the free ends of which are linked to the plate 19. The bell-cranks are pivoted at 30 to a plate 28 loosely mounted on the piston-rod 17, the latter being shouldered at 18 to support the plate 28. The links 31. 29 are in alignment for the first part of the drawing operation, but when adjustable stops 36 on the piston-rods 27 contact with the cylinder head the drawing resistance is transferred from the fluid-pressure in the lower end of the cylinder 16 to the fluid pressure in the upper end of the cylinders 21.
Patent GB-1185331-A (GB)
Title: Improved Vehicle-Cleaning Appliance
Inventor: MAXWELL EUSTACE
IPC: B60S3/06
Filed: 1966-01-27
Abstract: 1,185,331. Vehicle washing apparatus. A.V.W. EQUIPMENT Ltd. 26 April, 1967 [27 Jan., 1966], No 3673/66. Heading B7J. A vehicle washing apparatus has motor rotated side and roof cleaning members 2, 3 and 4 sprayed with water or detergent and mounted on swing arms 8, 9 and 10, and which at rest occupy the positions shown in Fig. 4, and sensing means to detect excessive contact pressure between each cleaning member at a vehicle and to initiate movement to reduce contact pressure between that cleaning member and the vehicle. Sensing means to operate the cleaning members may be as described in Specifications 1,141,947 and 1,114,418. Carriages 11 and 12 mounting the arms 8 and 9 and side brushes engage and are driven transversely of the frame 1 by motor driven screws 13, 14 for example, and carriages 17 mounting the arms 10 and top brush may be lifted or lowered on screws 18 by motor 19. Electric switches (not shown) control the sprays and the current to the motors 15, 16, 19 and retract the brushes when the support arms are deflected from the Fig. 4 position. The gantry 1 is driven by a reversible motor 22, and photoelectric units 23, 24 controlling the motor 22 and which may be coin operated are disposed at each end to be actuated by a driven vehicle which is stopped directly a beam is cut. Cutting of a beam drives the gantry and rotates the brushes, and as the arms 8 and 9 are deflected the gantry is halted or at least slowed and the brush carriages 11 and 12 moved apart to allow the arms 8 and 9 to return to their rest position. When this position is reached the carriage motors 15, 16 are switched off and the gantry started again with the vehicle between the side brushes 2 and 3 until the vehicle front deflects the top brush 4, in which position the arms 10 are deflected, the gantry drive halted and the top brush carriage motor 19 started to lift the brush 4 clear of the vehicle bonnet. The arms 10 then return to their rest position, retraction of the brush 4 ceases, and the gantry resumes its forward travel. This stopping and starting of the gantry continues as the brushes are deflected and returned until the vehicle is cleared and the photo-electric beam is restored to stop and then reverse the gantry and the operation. The electric motors may be replaced by pneumatic or hydraulic means and the screws 13, 14, 18 replaced by door track runners and wheels.
Patent GB-794810-A (GB)
Title: Improvements relating to plastic coverings for tubes or posts
IPC: G09F7/00
Filed: 1957-02-02
Abstract: 794,810. Posts. BURN, L. A. Feb. 2, 1957, No. 3703/57. Class 20(1) [Also in Group XXVIII] A plastic covering for a post, e.g. a signpost or pedestrian crossing post, comprises an inner plastic tube a divided longitudinally at b and a number of relatively short abutting plastic sleeves c, d, fitting closely over the tube a to which they are secured by adhesive. The tube a and sleeves c, d, may be formed of extruded unplasticized polyvinyl chloride, alternate sleeves c, d, being of appropriate colours e.g, black and white. The sleeves c, d, cause the edges of the gap b to abut when fitted over the tube a.
Patent GB-411596-A (GB)
Title: Improvements in or relating to dynamo-electric machines
IPC: H02K9/16
Filed: 1933-02-07
Abstract: 411,596. Cooling dynamo - electric machines. NAAMLOOZE VENNOOTSCHAP INDUSTRIE VOORHEEN W. SMIT & CO., Slikkerveer, near Rotterdam, Holland. Feb. 7, 1933, No. 3748. Convention date, Feb. 8, 1932. [Class 36.] Casings.-A totally enclosed machine has a heat - exchanging mantle of corrugated sheet metal to which the end shields are directly secured, the mantle serving as the casing and forming the principal means for preventing radial movement of the laminae. As shown, internal air is blown through the set of ducts formed by the inner surface of the corrugated frame 1 by one set of fan blades, and another set of fan blades mounted on the opposite side of the same disc passes external air along the outer surface of the corrugated frame. The corrugations need not extend around the whole circumference of the stator and may be enclosed by a cover. The rotor spider has axial channels and the rotor and stator cores have radial ducts.
Patent GB-1189276-A (GB)
Title: Graft Polymers
Inventor: NUTZEL KARL
IPC: C08F279/00
Filed: 1969-01-23
Abstract: 1,189,276. Graft polymers. FARBENFABRIKEN BAYER A.G. 23 Jan., 1969 [24 Feb., 1968], No. 3775/69. Heading C3G. [Also in Division C5] A graft polymer is produced by reacting a polysodium hydrocarbon derived from a hydrocarbon having a molecular weight of at least 500 and containing at least two sodium atoms per molecule with an olefinically unsaturated monomer in solution or suspension in an inert liquid. The polymer is prepared by reacting, for instance, polybutadiene, polyisoprene, polypentenamer, polystyrene or styrene-butadiene copolymer with an alkyl or aryl sodium compound. Specified graft monomers are mono- and di-olefins and aromatic vinyl or vinylidene compounds. The polymerization may be carried out in the presence of a halide of a metal of subsidiary Groups IV to VIII of the Periodic Table, e.g. TiCl 4 , VOCl 3  or WCl 6 . In Example 1, a sodium polypentenamer prepared by reacting a 1,4- transpolypentenamer with sodium phenyl in lumene is grafted with butadiene. 1,4-cis-polybutadiene is reacted in Example 2 with sodium phenyl in hydrogenated diisobutylene prior to being grafted with ethylene using TiCl 4  as catalyst.
Patent GB-473582-A (GB)
Title: Improvements in machines for winding web rolls and producing stacks of sheets therefrom
IPC: B65H75/00
Filed: 1937-02-09
Abstract: 473,582. Winding webs. BURGESS, A. F. (International Cellucotton Products Co.) Feb. 9, 1937, No. 3845. [Class 100 (i)] A winding - machine for webs which are advanced continuously to the winding-mechanism is constructed with means for effecting a relative lateral shifting of the feeding and winding means alternately in opposite directions at selected intervals, so that the completed roll is formed of a number of plies of material which are offset laterally from a similar set of plies. The completed roll can be cut radially to form a series of stacks of sheets which are staggered relatively to one another. For dealing with a number of webs 14 of folded crepe tissue paper, the webs are fed by feeding rollers 12 to a constantly driven winding, device, mounted on a hollow shaft 5, comprising shoes 8 carried by spokes 7 which are moved inwards radially as the winding proceeds so that the outer diameter of the roll being formed is substantially constant. The shaft 5 is driven by bevel gearing 9, 10, the shaft 5 being splined to its driving gear to permit of its lateral movement. The shaft 5 is geared to a counting- device 211, and by the aid of this the operator actuates a handle 20 to move a lever 16 alternately in different directions, and thus by means of a roller 18 and roller 15 to move the shaft 5 alternately in different directions so as to cause offsetting of one series of plies relatively to the next series. A spring-catch 30 holds the handle 20 in its two extreme positions. The counting-device may actuate automatic mechanism to cause the lateral shifting of the shaft 5. The completed roll may be cut into a number of staggered piles by means of an electrically driven slitting saw 24 which preferably coacts with grooves 28 in the spokes 7 and shoes 8 when cutting the wound roll in a radial direction.
Patent GB-664186-A (GB)
Title: Variable speed gears for chain driven cycles
Inventor: MILLWARD EDWARD ARTHUR
IPC: B62M9/126
Filed: 1949-02-14
Abstract: 664,186. Variable-speed chain gearing. PHILLIPS & CO., Ltd., J. A. March 7, 1950 [Feb. 14, 1949], No. 3916/49. Class 80 (ii) A bicycle change-speed gear of the Derailleur type comprises sprockets 11-13 engaged by a chain 15, which runs over the ball bearing rollers 16, 17. The rollers 16, 17 are carried by two oppositely curved, parallel, plates 18. The ends of the plates 18 overhang the peripheries of the rollers 16, 17 and are outwardly lipped so that they may act as guide surfaces for the chain 15. The plates 18, which together comprise a tensioning arm, are pivoted at 23 off the centre of their length, the pivot axis being near the roller 16 which in turn is close to the assembly of sprockets 11-13. At the pivot 23 the plates 18 are attached to the gear change operating mechanism, which moves them laterally. This mechanism consists of a sliding spindle capable of rotation in a fixed sleeve, the spindle being connected to a controlling cable and its movement resisted by a helical compression spring; this spring also loads the tension arm torsionally. Means are provided for adjusting the unit to suit the chain line of the cycle. The device may be affixed to the bicycle by an attachment bracket 27 or by a cranked bracket attached to the chain stay.
Patent GB-543927-A (GB)
Title: Improvements in or relating to stackable chairs, tables and the like
IPC: A47C3/04
Filed: 1941-03-24
Abstract: 543,927. Chairs; furniture frames. WYATT, E. H. March 24, 1941. No. 3973. [Classes 52 (ii) and 52 (iii)] Chairs, tables, &c. constructed to facilitate nesting have substantially rectangular seat or top frames 7 .. 14 and the legs 1-4 of wood are secured to the outside edges of the frames, the front legs 2, 3 at least being connected to the frames by mortice joints as shown in an exploded view in Fig. 6. The rear legs may be continued upwards to form a back and are not connected beneath the frames so that the chairs &c. may be stacked vertically as shown in Fig. 2. The lower ends of the front legs are widened to receive side rails 17 which are morticed into the back legs. The tops of the front legs are attached by screws 25 to the tongues 19 of the upper front frame members 11, and the frame members are secured together by screws 15. The space between the frames may be formed into a receptacle for handbags, &c. by the seat proper 27, Fig. 4, and a bottom closure 26 of the lower frame.
Patent GB-1483752-A (GB)
Title: Electrical adaptor
IPC: F21V19/00
Filed: 1974-01-29
Abstract: 1483752 Lamp holders LUCAS ELECTRICAL Ltd 6 Jan 1975 [29 Jan 1974] 3983/74 Heading H2E An electrical adapter comprises a hollow electrically insulating body 10 having a circular substantially planar base 17, a side wall 24 having an outer cylindrical surface, and a wall portion 22 mounted on wall 24 and extending further from the base 17 as does wall 24, first and second electrical terminals 11, 12 mounted in the body 10, a pair of parallel electrical connectors 13, 14 extending outwardly from the base 17, and electrically conducting means, for example stepped strips 15, 16 that connect the connectors 13, 14 to a respective terminal 11, 12. The first terminal 11 engages wall portion 22 and its outer end is further from the base 17 than that of the second terminal 12, the terminal 11 projecting beyond wall 24. As described, the wall portion 22 is disposed radially outside the wall 24 and is connected thereto via a flange 23. Rivets 35, 38 connect the strips 15, 16 to flange 23 and base 17 respectively. An insulating blade 40 ensures that the connectors 13, 14 engage in a socket in the correct manner. The terminals 11, 12 are situated in respective recesses 31, 32 separated by a partition wall 30, the terminals 11, 12 each including a tang 33, 36 which engages a respective rim 34, 37 to hold the terminals against movement towards the base 17. The adapter is particularly adapted for connecting a quartz-halogen filament in a vehicle lamp unit to a power source. The adapter is filled adjacent an aperture in a reflector of the lamp unit and a cover is fitted around a wall 21 of the adapter to seal against ingress of dust and/or water.
Patent GB-138898-A (GB)
Title: Power governor
IPC: G05D13/00
Filed: 1920-02-10
Abstract: 138,898. Penkala, L. Feb. 10, 1919, [Convention date]. Dynamometric governors.-In a governor in which the distortion of an elastic part of a powertransmitting system is used to effect regulation of the power developed or absorbed, a shaft 2 transmits power to a shaft 11 through planet wheels 5 and bevel wheel 6. Each of the planet wheels 5 has attached to it a spur wheel gearing with a straight rack 7 carried by a member 8 which adjusts itself against a spring 12 and effects the governing action through a rod 14.